Linux

Linux man test: Let's take a look at the test explanation in Linux (use man test or info test) [plain] TEST (1) fsf test (1) NAME test-check file types and compare values SYNOPSIS test EXPRESSION [EXPRESSION] test option description Exit with the

Postfix to build a pure Mail forwarding Server 1) install dns aptitude install bind9 dnsutils 2) Configure dns a) named. conf. local zone "test.com" {type master; file "/etc/bind/test.com" ;}; B) dgnc. om $ TTL 604800 @ in soa @ mail203.local. (20130

Boot. ini modification causes the system to fail to start normally. A few days ago, due to the dual-system installation, the boot was modified. ini, the content is directly copied and pasted online, and later found that the system could not be

Simple operations on linux users and user groups, and file permissions can be created only with root permissions. New linux users adduser AB can be created with the name AB. New users do not have a password, note that users without passwords cannot

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Ubuntu12.04 is a cross-platform International Dictionary software! It is highly functional and practical. It is favored for "wildcard matching", "word search with mouse", and "fuzzy search! Starship 3.0 adds new functions such as full-text

Install the new kernel for the linux release. My machine is Thinkpad T420i and the system is debian wheezy. [cpp] 1. Compile Kernel: make menuconfig make-jn sudo make modules_install sudo make headers_install sudo make install sudo update-grub

You can use the: s command to replace the string in vi/vim. In the past, we used only one format to replace the full text. Today we found that there are many ways to write this command (vi is really strong, and there are still a lot to learn).

Linux Firewall command for disabling IP address some common commands for using iptables to block ip segments in linux: the command for blocking a single IP address is: the command for iptables-I INPUT-s 211.1.0.0-j DROP an IP segment is: iptables-I

Commands related to Linux firewall because a virtual machine on a Linux machine fails, you need to restart the machine, and all the virtual machines on this machine will be restarted. After the restart, You need to manually restart the services on

The file generation time on the Mount mount Mount point follows the actual situation of the system: One of my Linux systems, mount one NAS, is two systems, with A writing operating system, B Representing the NAS system. Mount nfs B on A, and grant A

Solve the Problem of disconnection after SecureCRT connection to linux times out. Method 1: Start from the client. Method 2: Start from the server and modify the/etc/ssh/sshd_config configuration file ClientAliveInterval 300 (the default value is 0)

Clear boot partitions in UbuntuProblemAt the time of today's update, an error is reported:Because I allocated 256 m to boot and installed the system kernel in the boot partition, I need to clear the boot partition.View the existing kernel of the

Configure YUM local repository 1. I use an image file to mount a CD, mount-o loop/root/centOS5.4.iso/media/cdrom can also be used with mount-t iso9660/dev/cdrom/mnt/cdrom. Make sure the/mnt directory contains the cdrom folder 2. install createrepo1.

Creating a Backup with innobackupex $ innobackupex -- defaults-file =/etc/my. cnf -- user = DBUSER -- password = DBUSERPASS/opt/backup/BACKUP-DIR/$ innobackupex -- user = DBUSER -- password = DBUSERPASS/path/to/BACKUP-DIR/-- no-timestamp $

If multiple linux systems are installed on one server as NIC drivers in the company, you must test the driver on Multiple kernel versions. There is only one server. In this case, there are only two solutions. The first solution is to have one system

Ckermit installation and configuration install kernel # apt-get install ckermit modify the configuration file configuration of kermit ------------------------------------ # vi/etc/kermit/kermrc below is recommended when U-Boot and Linux are used:

The centos ftp service cannot be used. First, you must enable the vsftpd service on the centos server. By default, the vsftpd service is disabled. The simplest way is to enable the vsftpd service through services on the GUI. When the vsftpd service

Shell code #! /Bin/bash for a in $ @ do case $ a in file = *) file = "$ (echo $ a | sed's /. * = //; s/% sp % // G') "; list) mode = list; find = *) mode = find var = "$ (echo $ a | sed's /. * = //; s/, // G') "; add = *) mode = add var =" $ (echo $

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